Hints io Cultivators of the Sugar Cane. 289 
leech ; the former being a section through the middle of it, and 
the latter showing its outside ; it is a brass tube A, having a 
cover B at one end, through which a screw C passes; this screw 
has a circular piece of brass a fixed upon it, which slides in the 
tube, and carries the three piercers J ; a spiral spring surrounds 
the screw, and presses upon the piece a, so as to force it always 
towards the open end of the tube; but a milled nut b, upon the 
screw C, prevents it going too far; dis a small spring catch, 
fixed within side the tube, and having a button e proceeding from 
it, through the side of the tube; the catch passes through a 
small square hole in the piece a,and has a_kind of hook formed 
upon it, of a similar shape to the hook of a door latch ; this, when 
the screw C is drawn back, by pulling its nut 0, retains it as shown 
in the figure, the spring being fully bent ; and in this state the 
open end of the tube is to be applied upon the part where the 
bleeding is to be performed ; then, by pressing upon the head of 
the button e, the spring catch d is discharged, and the spring 
throws the piece a forward, causing the points 6 to enter the skin, 
and make the punctures, the depth of which is regulated at plea- 
sure by the nut 2; which being serewed along the screw C, allows 
the points to protrude as far beyond the end of the tube as the 
operator’s judgement directs, when the spring is discharged. 
Fig. I. is the syringe and cupping-glass, to be applied after this 
operation ; Ei is a small glass bell, of which there are several of 
different sizes provided; it has a brass cap f, terminating in a 
screw &, by which it is attached to the end F of the syringe G; 
this exhausts the air, when the handle H is drawn out in the usual 
manner; a small valve of bladder being tied over the aperture 
in the end of the screw g, to prevent the re-entrance of the air 
when the handle of the syringe is returned; fis a small stop- 
cock, to shut up the passage when the exhaustion is complete, 
as the valve alone would sometimes be insufficient to prevent the 
leakage of the air when the syringe is unscrewed. 
——as 
LXII. Hints to Cultivators of the Sugar Cane. By C. BLacx~- 
: ForD, Esq. of Jamaica*, 
Tre tenacity of cane liquor, which resisted the power of 
white lime to decompose and neutralise its substance, having 
been suggested to me, and in some instances confirmed by my 
own observation, it has occasioned me much painful solicitude to 
divine why the effect should not be the same in all cases. 1 was 
well aware, that the richer the liquor the more temper lime was 
necessary; the weaker juices more readily deposited its more 
* From the Jamaica Royal Gazette of November 1813. 
Vol.43, No. 192, April 1814, T ponderous 
